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Extension builders near me

Search your postcode to find your local Checkatrade-approved tradespeople

Finding extension builders near me

Looking to take on an extension project are you? How exciting! Well then, let us help you find the right professionals to help you bring your extension ideas to life.

Let’s dive into the world of local extension builders and guide you in knowing how they’ll help you transform your home. You’ll learn the steps you need to take to find the perfect trade professional for your project.

Discover top-rated, Checkatrade-endorsed extension builders near you in under a minute

All you need to do is visit our website to discover all our extension builders’ profiles. Then you can take a nosy at their portfolio, their website and best of all, real reviews from fellow homeowners in your local area. Quickly see which Checkatrade extension builders are recommended in near you!

Starting your search is easy. Pop your postcode into the below bar, and we’ll list the recommended extension builders near you.

See the tradespeople we've checked and recommend for your job

Looking for reliable extension builders is a challenging task, especially when you’re not well-prepared.

After all, extensions are significant additions to your home. They enhance your living space and add property value, so you want to ensure only capable professionals handle the task.

However, that doesn’t mean your search has to be dull or stressful!

We’re here to demonstrate the ease of finding local extension builders near you.

So, whether it’s a cup of tea, a glass of lemonade, or something a little stronger, grab a beverage and let’s get started.

Checkatrade contractor iFurb checking construction plans

Let’s begin by addressing your query about ‘how to find local extension builders near me.’

Which companies specialise in extensions near me, and how can I find reputable local extension builders?

When it comes to identifying the best extension builders near you, there are several approaches you can take with us.

A quick search

To gather comprehensive information about extension builders in your area, search for them on our directory.

You’ll find all the details you need about our builders by scanning their Checkatrade profiles.

This includes their customer reviews, background checks, certifications, and portfolios of their previous work.

Request a quote

Even better, utilise our convenient request a quote feature to tap into the largest and most trustworthy online directory in the UK.

All you need to do is describe your extension requirements. We’ll then connect you with our highly recommended extension experts who’ll contact your directly to discuss the finer details.

Enter your postcode

Alternatively, browse through our Checkatrade extension experts by entering your postcode below. We’ll then present a list of our top members who work in your local area.

See the tradespeople we've checked and recommend for your job

NB: Finding an extension builder through Checkatrade saves you the hassle of scouring multiple websites, online directories, and social media pages. Additionally, Checkatrade conducts the necessary checks for you, offering you assurance that your chosen builder is reputable, qualified, and dedicated.

Answers to your extension-related questions

How much do extension builders charge in the UK?

The average hourly rate for an extension builder in the UK is approximately £40 per hour. However, this rate varies depending on the builder’s expertise. It also depends on the size, complexity, and location of your project. For example, builders in London might charge a bit more!

Average costs for common extension projects

For larger extension projects, such as a multi-storey addition, costs range from £1,500 to £3,000 per m2. Once again, this depends on various factors, which is why we suggest asking for multiple quotes from different builders before making a decision. This practice also helps you gauge the average cost in the area you live.

When it comes to extensions, quality matters. While choosing the cheapest option is always tempting, it often proves disastrous in the long-term. Subpar work and additional expenses down the line are common issues, and ones you’d rather avoid.

Consequently, it’s important to choose an extension builder who offers a fair price whilst possessing the right experience and skills for a job well done.

What’s the hourly rate for an extension builder?

This varies depending on your location and the builder’s experience. However, on average, it’s around £240 – £300 per day.

Related content: Read our builder day rate for more comprehensive information.

You’ll only find trades who meet our high standards and pass our quality checks on Checkatrade.

How to identify a reputable local extension builder

We’ve prepared a guide tailored to hiring a dependable extension builders in the UK. Read our resource on how to find a good builder for more information.

Signs of a reliable extension builder include:

  • Being an approved builder on Checkatrade
  • Holding membership in recognised trade associations, such as the FMB
  • Positive reviews and ratings!

Learn more in our guide on how to hire a trustworthy extension builder.

How do I verify if an extension construction company is licensed? What do I need to check?

Builders who undertake extension projects should ideally possess certain qualifications, insurance coverage, and affiliations with trade bodies. Checking the following are a few ways to make sure you enjoy a smooth and successful construction process.


While not all builders are required to have specific qualifications, hiring builders with relevant certifications or qualifications will enhance your confidence in their expertise.

Look for builders who’ve completed training programs, apprenticeships, or have received certifications in relevant fields such as construction, carpentry, or masonry.


Builders should have adequate insurance coverage to protect both you and themselves should an unexpected event occur during the construction process.

The two primary types of insurance to look for are:

  • Public Liability Insurance: This insurance covers any damage or injuries that might occur on your property during the construction process. It also provides financial protection in the case of an accident.
  • Contractor’s All Risks Insurance: This insurance covers any damage to the building work itself – including tools and materials – from unforeseen events like fire, theft, or natural disasters.

Trade bodies

Reputable builders often belong to trade bodies or professional associations that set industry standards and ensure ethical practices. These bodies offer training, support, and guidelines for their members. Some well-known trade bodies in the construction industry include:

  • Federation of Master Builders (FMB): A widely recognised organisation that promotes high standards of workmanship and customer service in the construction industry. Builders who are members of FMB are expected to meet strict criteria and adhere to a Code of Practice.
  • National Federation of Roofing Contractors (NFRC): Specifically for roofing contractors, NFRC is a trade association that represents and supports qualified roofing professionals.

Before hiring a builder for your extension project, we recommend asking about their qualifications, insurance coverage, and any affiliations they have with trade bodies. Checking these factors will offer you peace of mind and increase the likelihood of a successful and well-executed extension.

 Extension Builders near me

How long does it take to complete a new extension?

The timeline depends on the size and complexity of the project. As a general guideline:

  • A small to medium-sized extension, like those found in typical semi-detached houses, usually takes around 1 – 3 months to complete.
  • A larger or more intricate extension, featuring multiple stories or unique design elements, typically takes around 3 – 6 months or more to finish.

NB: Unexpected challenges such as structural issues or additional repairs can extend the construction duration.

How many materials do I need for an extension per square metre?

This varies based on the size, shape, and materials used. As a general rule:

  • Standard-sized materials, such as bricks, require around 60 units per square metre for an average-sized extension.
  • Larger materials, like concrete blocks, need around 45 units per square metre for an average-sized extension.

These figures can guide you, but a professional extension builder will give you a more accurate estimate for your project.

Related content: How much does a house extension cost?

For building extensions, should I employ house extension architects?

Hiring an extension architect is a smart choice if you’re planning to add an extension to your home.

Architects are trained professionals who specialise in designing and planning buildings, and they offer a range of benefits throughout the extension process. For example, design expertise, space optimisation, compliance, cost efficiency, and project management.

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